Tank valve



FIG. 1 illustrates a front perspective view of a tank valve in accordance with a preferred embodiment of the present invention;

FIG. 2 illustrates a back perspective view of the tank valve in accordance with a preferred embodiment of the present invention;

FIG. 3 illustrates a front view of the tank valve in accordance with a preferred embodiment of the present invention;

FIG. 4 illustrates a back view of the tank valve in accordance with a preferred embodiment of the present invention;

FIG. 5 illustrates a right side view of the tank valve in accordance with a preferred embodiment of the present invention; and

FIG. 6 illustrates a left side view of the tank valve in accordance with a preferred embodiment of the present invention.

FIG. 7 illustrates a top view of the tank valve in accordance with a preferred embodiment of the present invention;

FIG. 8 illustrates a bottom view of the tank valve in accordance with a preferred embodiment of the present invention; and,

FIG. 9 illustrates a cross-section view of the tank valve, in accordance with a preferred embodiment of the present invention. 

CLAIM The ornamental design for a tank valve, as shown. 